4. Troubleshooting
4.2.4. Example of Trouble Shooting
Symptom
Related Image
Causes and Countermeasures
A blank vertical cell (block) appears
on the screen.
Address buffer defect.
•
Replace the corresponding upper/lower
buffers (E/F).
COF Film defect (burnt).
•
Replace the module.
A green screen appears when the
TV is turned on.
The Scale is not reseting.
•
Replace the Main Board.
The OSD box appears but there is
not text.
Incorrect program version.
•
Replace the corresponding Upper / Lower
buffers (E, F).
A blank upper (or lower) block
appears on the Screen.
Upper / Lower Y buffer defect.
•
Check the version of each Program.
•
Replace the Main Board.
Either the main or sub picture does
not appear.
Repace the Main Board.
A green dots appears on the screen.
The SMPS voltage is incorrect.
•
Adjust the SMPS voltage according to the
voltage printed on the module label.
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